I’m still working up some good tips and advice on MySQL on Solaris (particularly the T1000, the new x86 based servers like the X4150 and ZFS, amongst other things), but until then I found Getting Best out of MySQL on Solaris while doing some research.With the latest OpenSolaris builds (b79, from memory) we now have MySQL built-in, and I worked with the folks on the OpenSolaris Database team to get some reasonable configurations and defaults into the system. MySQL 5.1 and 64-bit support is currently going through the process and will be a in future build. I’ve also been working with the DTrace people to improve the DTrace support we have in MySQL (documentation will go live this week, I hope). MySQL 6.0.4 will have some basic DTrace probes built-in, but I’ve proposed a patch to extend and improve on that significantly. We’re in the process of updating the documentation and advice on Solaris (and OpenSolaris) installations and layout too, which is itself part of a much larger overhaul of the installation and setup instructions for all platforms.